Genetics and Evolution

What I know What I Want to Know _____________________________

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Date: ___________________________________

TraitsL.O. Determine the traits you show.

Trait Possibilities Yours

Hair ColourBrown

Black

Blonde

Red

Eye ColourGreen

Blue

Brown

Other

EarlobesFree

Attached

Fingerprint

What causes us to have different traits?__________________________________________

DNA

Date: ___________________________________L.O. Learn what DNA is and what it looks like.

Your _______________ (also known as deoxyribonucleic acid) contains all of the information required to build you. DNA is twisted into a spiral pattern known as a __________________________.

Pupil Criteria Teacher

I know that everything required to make a person is in the DNA

I can describe the shape of DNA.I know the term double helix.

Is there anywhere I can improve or areas of difficulty?

DNA PackingL.O. learn how DNA is packed into cells.

____________ and _____________ got the Nobel Prize in 1962 for discovering the shape of DNA in Cambridge._______________ was an X-ray cryastallographer, their discovery would not have been possible without her.

Date: ___________________________________Every cell in your body contains several metres of DNA, how does it all fit?

Humans have _________ pairs of chromosomes. Other species have different numbers.A segment of DNA that codes for a particular trait is called a ____________.Within a species, there is many similarities in DNA. For example, all humans have a gene that codes for growing hair; however they vary in what colour hair they grow.

Half of these come from your mother and half from your father.

Pupil Criteria Teacher

I know that DNA is tightly coiled to fit in my cells.I can refer to “packages” of DNA as chromosomes.

Date: ___________________________________I know that chromosomes come in pairs.

Is there anywhere I can improve or areas of difficulty?

Date: ___________________________________

HeredityL.O. understand how traits are passed on from one generation to the next.

Traits that are passed from parents to offspring are said to be hereditary.Think about your parents, which did you inherit your hair colour from? ___________________________Just because your hair is one colour though, does not mean that it is the only hair colour gene your body contains. The trait that your body displays is the ___________________ gene. If your body carries a gene for another hair colour that it does not display, this gene is recessive.Dominant genes are

represented by capital letters and recessive genes are represented by lowercase; if they are genes for the same trait, they use the same letter.Example) B represents brown hair and b can represent red hair. A baby is born with brown hair, what possible genes does it have?___________________________________________________________________________________________

If two parents with hybrid dominant brown hair, have a baby, what colour might the baby’s hair be?

Circle all of the quadrants that would result in a brown haired baby.____________________________________________________________________________________________________________

Date: ___________________________________If these two pythons were to reproduce, what might the babies look like?

This python also displays a recessive trait; what makes this one different?________________________________________________________________________

How would we decide if a baby of this python and the albino python could lack pigment and scales?____________________________________

Pupil Criteria Teacher

I can use a table to compare the likelihood of a baby displaying a particular trait.

I only compare two possibilities for a single gene at a time.

I know that if someone has a dominant gene, it will be shown.

I know it takes two identical genes to show a recessive trait.

Is there anywhere I can improve or areas of difficulty?

Date: ___________________________________

Natural SelectionL.O. understand how natural selection leads to evolution.

Variation within a species is caused by random mutations in genes. This differences mean that as the environment changes, some members of a species are better equipped to survive or make them more preferable mates.What is the name of the mechanism that says genes can change randomly as cells (or organisms) reproduce?___________________________________________________What is the name of the theory that states that all living may have had a common ancestor?___________________________________________________How were the tortoises on the smaller islands of the Galapagos differently adapted than those on the larger island?

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In the video, how were the lighter green beetles naturally selected? Use the image at the bottom for help.____________________________________________________________________________________________________________________________________________

Why are albino animals more prominent in captivity than in the wild?________________________________________________________________________________________________________________________________________________________________________Why are peacock tails getting larger with new generations?____________________________________________________________________________________

Darwin’s Finches

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Date: ___________________________________L.O. study how rainfall affects the beak size of finches in the Galapagos.

(use Gizmo: Rainfall and Bird Beaks and accompanying student sheets)Intro and Activity A Day 1Activities B and C Day 2

Work in partnersHalf do B and half do CClass discussion on differences